AQSQID: 840080290007

Site Name: Paonia

Location: Delta Co, CO

Reporting: True, Located: True

Current AQI: 42.0

Delta Co CO, US: 38.8763, -107.6022

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 19, 2019, 9 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 42.0
 
March 19, 2019, 8 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A 4.0 μg/m3 (4) 0.3 μg/m3 (1) 39.0
 
March 19, 2019, 7 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 39.0
 
March 19, 2019, 6 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 9.0 μg/m3 (8) 5.1 μg/m3 (21) 38.0
 
March 19, 2019, 5 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) 8.6 μg/m3 (36) 36.0
 
March 19, 2019, 4 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 13.0 μg/m3 (12) 12.7 μg/m3 (51) 51.0
 
March 19, 2019, 3 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 15.0 μg/m3 (14) 11.7 μg/m3 (49) 49.0
 
March 19, 2019, 2 p.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 17.0 μg/m3 (15) 8.5 μg/m3 (35) 35.0
 
March 19, 2019, 1 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 25.0
 
March 19, 2019, noon 3.0 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 25.0
 
March 19, 2019, 11 a.m. 6.2 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 0.8 μg/m3 (3) 25.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 0.6 μg/m3 (2) 4.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 4.2 μg/m3 (18) 18.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 1.7 μg/m3 (7) 7.0
 
March 19, 2019, 6 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A 0.0 μg/m3 (0) 1.5 μg/m3 (6) 26.0
 
March 19, 2019, 5 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 5.1 μg/m3 (21) 25.0
 
March 19, 2019, 4 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 25.0
 
March 19, 2019, 3 a.m. 3.4 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A 15.0 μg/m3 (14) 4.8 μg/m3 (20) 25.0
 
March 19, 2019, 2 a.m. 3.6 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A 12.0 μg/m3 (11) 5.3 μg/m3 (22) 28.0
 
March 19, 2019, 1 a.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 2.9 μg/m3 (12) 32.0
 
March 19, 2019, midnight 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 4.7 μg/m3 (20) 37.0
 
March 18, 2019, 11 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 10.0 μg/m3 (9) 9.5 μg/m3 (40) 40.0
 
March 18, 2019, 10 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 12.0 μg/m3 (11) 3.7 μg/m3 (15) 38.0
 
March 18, 2019, 9 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A 7.0 μg/m3 (6) 0.3 μg/m3 (1) 39.0
 
March 18, 2019, 8 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A 10.0 μg/m3 (9) 2.4 μg/m3 (10) 39.0
 
March 18, 2019, 7 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A 8.0 μg/m3 (7) 0.3 μg/m3 (1) 39.0
 
March 18, 2019, 6 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 38.0
 
March 18, 2019, 5 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) 8.2 μg/m3 (34) 37.0
 
March 18, 2019, 4 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 18.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0
 
March 18, 2019, 3 p.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 22.0 μg/m3 (20) 5.5 μg/m3 (23) 31.0
 
March 18, 2019, 2 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 2.7 μg/m3 (11) 31.0
 
March 18, 2019, 1 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 30.0
 
March 18, 2019, noon 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) 4.6 μg/m3 (19) 30.0
 
March 18, 2019, 11 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) -0.3 μg/m3 (0) 30.0
 
March 18, 2019, 10 a.m. 11.7 ppb (11) 10.7 ppb (10) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A -2.0 μg/m3 (0) 1.3 μg/m3 (5) 23.0
 
March 18, 2019, 9 a.m. 12.6 ppb (12) 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 23.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 12.9 μg/m3 (52) 52.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 6.5 μg/m3 (27) 27.0
 
March 18, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 28.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) -0.9 μg/m3 (0) 2.0
 
March 18, 2019, 4 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 3.0 μg/m3 (3) 3.6 μg/m3 (15) 28.0
 
March 18, 2019, 3 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 25.0
 
March 18, 2019, 2 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) -1.8 μg/m3 (0) 26.0
 
March 18, 2019, 1 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) -3.6 μg/m3 (0) 28.0
 
March 18, 2019, midnight 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 4.0 μg/m3 (4) -0.1 μg/m3 (0) 36.0
 
March 17, 2019, 11 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 4.0 μg/m3 (4) 4.6 μg/m3 (19) 38.0
 
March 17, 2019, 10 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (7) 38.0
 
March 17, 2019, 9 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A 3.0 μg/m3 (3) 2.6 μg/m3 (11) 38.0
 
March 17, 2019, 8 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A 3.0 μg/m3 (3) 1.1 μg/m3 (5) 38.0
 
March 17, 2019, 7 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 37.0
 
March 17, 2019, 6 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) 5.1 μg/m3 (21) 37.0
 
March 17, 2019, 5 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 0.0 μg/m3 (0) 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 4 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 7.9 μg/m3 (33) 33.0
 
March 17, 2019, 3 p.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 1.1 μg/m3 (5) 31.0
 
March 17, 2019, 2 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) 1.7 μg/m3 (7) 31.0
 
March 17, 2019, 1 p.m. 0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 32.0
 
March 17, 2019, noon 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 31.0
 
March 17, 2019, 11 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 32.0
 
March 17, 2019, 10 a.m. 22.8 ppb (21) 22.8 ppb (21) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 27.0
 
March 17, 2019, 9 a.m. 39.6 ppb (37) 39.3 ppb (36) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) 2.7 μg/m3 (11) 37.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 3.5 μg/m3 (15) 15.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) N/A 3.0
 
March 17, 2019, 6 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 28.0
 
March 17, 2019, 5 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 0.0 μg/m3 (0) 3.2 μg/m3 (13) 27.0
 
March 17, 2019, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A -2.0 μg/m3 (0) 1.9 μg/m3 (8) 25.0
 
March 17, 2019, 3 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 25.0
 
March 17, 2019, 2 a.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 25.0
 
March 17, 2019, 1 a.m. 2.3 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) -3.0 μg/m3 (0) 29.0
 
March 17, 2019, midnight 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) -0.3 μg/m3 (0) 35.0
 
March 16, 2019, 11 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) N/A 36.0
 
March 16, 2019, 10 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 37.0
 
March 16, 2019, 9 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 38.0
 
March 16, 2019, 8 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 38.0
 
March 16, 2019, 7 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 3.0 μg/m3 (3) 0.6 μg/m3 (2) 38.0
 
March 16, 2019, 6 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 38.0
 
March 16, 2019, 5 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 38.0
 
March 16, 2019, 4 p.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 17.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
March 16, 2019, 3 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 2 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 32.0
 
March 16, 2019, 1 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) 2.7 μg/m3 (11) 32.0
 
March 16, 2019, noon 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A -4.0 μg/m3 (0) -2.2 μg/m3 (0) 32.0
 
March 16, 2019, 11 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 0.7 μg/m3 (3) 32.0
 
March 16, 2019, 10 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 32.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 4.4 μg/m3 (18) 18.0
 
March 16, 2019, 8 a.m. 0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 4.0 μg/m3 (17) 33.0
 
March 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 6.6 μg/m3 (28) 28.0
 
March 16, 2019, 6 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 31.0
 
March 16, 2019, 5 a.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 30.0
 
March 16, 2019, 4 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 25.0
 
March 16, 2019, 3 a.m. 3.5 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 25.0
 
March 16, 2019, 2 a.m. 3.0 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 26.0
 
March 16, 2019, 1 a.m. 3.6 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) -4.3 μg/m3 (0) 28.0
 
March 16, 2019, midnight 4.1 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (14) 38.0
 
March 15, 2019, 11 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 5.0 μg/m3 (5) 9.9 μg/m3 (41) 41.0
 
March 15, 2019, 10 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A 6.0 μg/m3 (5) 0.4 μg/m3 (2) 42.0
 
March 15, 2019, 9 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A 1.0 μg/m3 (1) 2.1 μg/m3 (9) 41.0
 
March 15, 2019, 8 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A 0.0 μg/m3 (0) 1.6 μg/m3 (7) 40.0
 
March 15, 2019, 7 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 38.0
 
March 15, 2019, 6 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 38.0
 
March 15, 2019, 5 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 12.0 μg/m3 (11) 6.3 μg/m3 (26) 37.0
 
March 15, 2019, 4 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 13.0 μg/m3 (12) 6.6 μg/m3 (28) 36.0
 
March 15, 2019, 3 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 14.0 μg/m3 (13) 9.5 μg/m3 (40) 40.0
 
March 15, 2019, 2 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) -1.1 μg/m3 (0) 33.0
 
March 15, 2019, 1 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 0.0 μg/m3 (0) 4.9 μg/m3 (20) 33.0
 
March 15, 2019, noon 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 0.5 μg/m3 (2) 33.0
 
March 15, 2019, 11 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A -2.0 μg/m3 (0) 2.1 μg/m3 (9) 34.0
 
March 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.1 μg/m3 (0) 5.0
 
March 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.3 μg/m3 (1) 1.0
 
March 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 13.0
 
March 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 5.2 μg/m3 (22) 22.0
 
March 15, 2019, 6 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A 2.0 μg/m3 (2) 0.4 μg/m3 (2) 35.0
 
March 15, 2019, 5 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 36.0
 
March 15, 2019, 4 a.m. 0.3 ppb (0) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 35.0
 
March 15, 2019, 3 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 0.6 μg/m3 (2) 34.0
 
March 15, 2019, 2 a.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) -2.4 μg/m3 (0) 34.0
 
March 15, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) 0.7 μg/m3 (3) 38.0
 
March 15, 2019, midnight 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) -4.2 μg/m3 (0) 37.0
 
March 14, 2019, 11 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 0.0 μg/m3 (0) -3.2 μg/m3 (0) 38.0
 
March 14, 2019, 10 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) 2.5 μg/m3 (10) 37.0
 
March 14, 2019, 9 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) 2.1 μg/m3 (9) 37.0
 
March 14, 2019, 8 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 36.0
 
March 14, 2019, 7 p.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 36.0
 
March 14, 2019, 6 p.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 4.7 μg/m3 (20) 35.0
 
March 14, 2019, 5 p.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 36.0
 
March 14, 2019, 4 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 12.0 μg/m3 (11) 5.1 μg/m3 (21) 35.0
 
March 14, 2019, 3 p.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) -4.5 μg/m3 (0) 35.0
 
March 14, 2019, 2 p.m. 4.0 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A 10.0 μg/m3 (9) -0.1 μg/m3 (0) 31.0
 
March 14, 2019, 1 p.m. 5.3 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 28.0
 
March 14, 2019, noon 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 2.9 μg/m3 (12) 25.0
 
March 14, 2019, 11 a.m. 2.4 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.3 μg/m3 (1) 30.0
 
March 14, 2019, 10 a.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) N/A 31.0
 
March 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 0.3 μg/m3 (1) 6.0
 
March 14, 2019, 8 a.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 23.0 μg/m3 (21) 5.8 μg/m3 (24) 31.0
 
March 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
March 14, 2019, 6 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 0.0 μg/m3 (0) 0.4 μg/m3 (2) 38.0
 
March 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) -1.0 μg/m3 (0) N/A
March 14, 2019, 4 a.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) 0.1 μg/m3 (0) 37.0
 
March 14, 2019, 3 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 38.0
 
March 14, 2019, 2 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A 2.0 μg/m3 (2) -0.2 μg/m3 (0) 39.0
 
March 14, 2019, 1 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A -3.0 μg/m3 (0) 1.1 μg/m3 (5) 42.0
 
March 14, 2019, midnight 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A 0.0 μg/m3 (0) 1.7 μg/m3 (7) 44.0
 
March 13, 2019, 11 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A 2.0 μg/m3 (2) 0.3 μg/m3 (1) 43.0
 
March 13, 2019, 10 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 42.0
 
March 13, 2019, 9 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A 0.0 μg/m3 (0) 1.3 μg/m3 (5) 40.0
 
March 13, 2019, 8 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 3.3 μg/m3 (14) 33.0
 
March 13, 2019, 7 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 27.0
 
March 13, 2019, 6 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 4.3 μg/m3 (18) 24.0
 
March 13, 2019, 5 p.m. 3.2 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 24.0
 
March 13, 2019, 4 p.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) 2.9 μg/m3 (12) 22.0
 
March 13, 2019, 3 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (20) N/A 10.0 μg/m3 (9) N/A 20.0
 
March 13, 2019, 2 p.m. 6.9 ppb (6) 2.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A 9.0 μg/m3 (8) 0.6 μg/m3 (2) 19.0
 
March 13, 2019, 1 p.m. 6.2 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) N/A 0.0 μg/m3 (0) 1.4 μg/m3 (6) 20.0
 
March 13, 2019, noon 6.4 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A -2.4 μg/m3 (0) 26.0
 
March 13, 2019, 11 a.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
March 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 1.0
 
March 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -0.8 μg/m3 (0) 4.0
 
March 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) N/A
March 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) -1.3 μg/m3 (0) N/A
March 13, 2019, 6 a.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (23) N/A 0.0 μg/m3 (0) -0.8 μg/m3 (0) 23.0
 
March 13, 2019, 5 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A -4.0 μg/m3 (0) -1.7 μg/m3 (0) 25.0
 
March 13, 2019, 4 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) 0.7 μg/m3 (3) 27.0
 
March 13, 2019, 3 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A -1.0 μg/m3 (0) 3.0 μg/m3 (12) 25.0
 
March 13, 2019, 2 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 24.0
 
March 13, 2019, 1 a.m. 4.4 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 22.0
 
March 13, 2019, midnight 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 6.5 μg/m3 (27) 27.0
 
March 12, 2019, 11 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 26.0
 
March 12, 2019, 10 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) -0.5 μg/m3 (0) 26.0